This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A coal-fired plant generates 600 MW of electric power. The plant uses 4.8 106 kg of coal each day. ... (Read 226 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
on: Jul 27, 2018
A coal-fired plant generates 600 MW of electric power. The plant uses 4.8  106 kg of coal each day. The heat of combustion of coal is 3.3  107 J/kg.
 
  The steam that drives the turbines is at a temperature of 300C, and the exhaust water is at 37C.
  (a) What is the overall efficiency of the plant for generating electric power?
  (b) What is the Carnot efficiency?

Question 2

How many moles are there in 2.0 kg of copper? (The atomic weight of copper is 63.5 and its specific gravity is 8.9.)
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

whitcassie

  • Sr. Member
  • ****
  • Posts: 298
Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 33
(b) 46

Answer to Question 2

32. moles


dakota nelson

  • Hero Member
  • *****
  • Posts: 604
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


whitcassie

  • Sr. Member
  • ****
  • Posts: 298
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Albany pitcher plant (Cephalotus follicularis) Albany pitcher plant (Cephalotus follicularis)
Plant Plant
Power in the United States: The Model Proposed by C. Wright Mills Power in the United States: The Model Proposed by C. Wright Mills
The Power of Classical Conditioning The Power of Classical Conditioning
Physics: Power, Energy and Time Physics: Power, Energy and Time
The flowering plant Arabidopsis thaliana The flowering plant Arabidopsis thaliana
Video: Electrocardiogram Examination

For a complete list of videos, visit our video library